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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the ignition switch.
  2. Verify the scan tool Authentication Switch parameter is Inactive.
    • If not the specified value, test the signal circuit terminal 5 for a short to voltage. If the circuit tests normal, replace the RCDLR.
  3. Install a 3A fused jumper wire between the signal circuit terminal 5 and B+. Verify the scan tool Authentication Switch parameter is Active.
    • If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the RCDLR.
  4. If all circuits tests normal, test or replace the ignition switch.
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